S-5732NSL1B-Y3N2U Datasheet, PDF (11/21 Pages) Seiko Instruments Inc – UNIPOLAR DETECTION TYPE HALL IC

125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC
Rev.2.1_00
S-5732 B Series
3. Basic operation
This IC changes the output voltage (V_OUT) according to the level of the magnetic flux density (N pole or S pole) applied
by a magnet.
The following explains the operation when the magnetism detection logic is active "L".
3. 1 Product with S pole detection
When the magnetic flux density of the S pole perpendicular to the marking surface exceeds the operation point
(B_OPS) after the S pole of a magnet is moved closer to the marking surface of this IC, V_OUT changes from "H" to "L".
When the S pole of a magnet is moved further away from the marking surface of this IC and the magnetic flux
density is lower than the release point (B_RPS), V_OUT changes from "L" to "H".
Figure 13 shows the relationship between the magnetic flux density and V_OUT.
V_OUT
B_HYSS
H
N pole
0
B_RPS
Magnetic flux density (B)
B_OPS
L
S pole
Figure 13
3. 2 Product with N pole detection
When the magnetic flux density of the N pole perpendicular to the marking surface exceeds the operation point
(B_OPN) after the N pole of a magnet is moved closer to the marking surface of this IC, V_OUT changes from "H" to "L".
When the N pole of a magnet is moved further away from the marking surface of this IC and the magnetic flux
density of the N pole is lower than the release point (B_RPN), V_OUT changes from "L" to "H".
Figure 14 shows the relationship between the magnetic flux density and V_OUT.
B_HYSN
V_OUT
H
N pole
B_OPN
L
S pole
B_RPN
0
Magnetic flux density (B)
Figure 14
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